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Table 1.
Minimum initial mass for SN Ib/c and IIb candidate stars (Mmin, WR and Mmin, IIb, respectively), their formation rate for each stellar simulation, and the fraction of them that successfully explode in SNe Ib/c and IIb, respectively, for different SN engines.
| Stellar simulation |
|||||
|---|---|---|---|---|---|
| Default | Shell over/ | Lower core | Initial rotation, | Increased winds, | |
| (Fig. 1a) | undershooting | overshooting | ω/ωcrit = 0.4 | η = 1.5 (Fig. 1b) | |
| Mmin, WR(Mmin, IIb) [M⊙] | 31 (26.2) | 30 (25.4) | 55 (53.7) | 27.0 (24.3) | 23 (18.8) |
| Ib/c (IIb) cand. [10−3(M⊙/yr)−1] | 1.3 (0.47) | 1.47 (0.27) | 0.43 (0.11) | 1.38 (0.61) | 2.5 (0.85) |
| FR12+rapid | 0% (31%) | 0% (59%) | 0% (13.4%) | 0% (53%) | 48% (42%) |
| FR12+delayed | 0% (30%) | 0% (68%) | 0% (7%) | 0% (52%) | 65% (100%) |
| S16+N20 | 0% (0%) | 0% (0%) | 0% (7%) | 0% (0%) | 2.6% (44%) |
| S16+S19.8 | 0% (0%) | 0% (0%) | 0% (7%) | 0% (0%) | 4% (50%) |
| P20E16+N20 | 0% (0%) | 0% (0%) | 0% (7%) | 0% (0%) | 1% (21%) |
| C20 | 100% (100%) | 100% (100%) | 100% (100%) | 100% (87%) | 60% (74%) |
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